// Copyright (c) 2008-2010, Arne Claus
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are permitted provided that the 
// following conditions are met:
//
// - Redistributions of source code must retain the above copyright notice, this list of conditions and the following 
//   disclaimer.
// - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following 
//   disclaimer in the documentation and/or other materials provided with the distribution.
// - Neither the name Arne Claus nor the names of any contributors may be used to endorse or promote products
//   derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 
// USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef __INCLUDED_CRL_BUFFER_ATOMIC_H_
#define __INCLUDED_CRL_BUFFER_ATOMIC_H_

#include "CBL_Tuple.h"
#include "CRL_Atomic.h"
#include "CRL_IndexBufferDescriptor.h"
#include "CRL_PixelBufferDescriptor.h"
#include "CRL_VertexBufferDescriptor.h"
#include "CRL_RangeDescriptor.h"
#include "CRL_Defines.h"

CB_SUBNAMESPACE_START(RenderLib)

class IBufferAtomic : public IAtomic
{
public:

	enum EBufferType
    {
    	IndexBuffer = 0,
        VertexBuffer,
        PixelBuffer
    };
    
    enum ELockType
    {
        LockOverwrite = 0,
        LockAppend,
        LockReadOnly,
        LockReadWrite,
        NumLockTypes,
        
        LockDiscard     = LockOverwrite,
        LockNoOverwrite = LockAppend
	};

public:

	virtual void* Lock(ELockType _LockType) = 0;
    virtual void* Lock(ELockType _LockType, const CRangeDescriptor& _rRange) = 0;
    
    virtual void Unlock() = 0;
	
	virtual void Update(const void *_pData) = 0;
	virtual void Update(const void *_pData, const CRangeDescriptor& _rRange) = 0;
    
    virtual int Bind(uint8 _Stream=0, uint32 _Offset=0, uint32 _Size=0) = 0;
	virtual int Unbind() = 0;
    
    EBufferType GetBindType() const { return m_BindType; }
	
    
protected:
	
    EBufferType m_BindType;
    void* 		m_pCurrentLock;
};

typedef CResourcePtr<IBufferAtomic> CBufferAtomicPtr;


CB_SUBNAMESPACE_END

#endif